from django_redis import get_redis_connection
from rest_framework import serializers

from oauth.models import OAuthQQUser
from oauth.utils import check_save_user_token
from users.models import User


class QQAuthUserSerializer(serializers.Serializer):

    access_token = serializers.CharField(label='操作凭证')
    mobile = serializers.RegexField(label='手机号', regex=r'^1[3-9]\d{9}$')
    password = serializers.CharField(label='密码', max_length=20, min_length=8)
    sms_code = serializers.CharField(label='短信验证码')

    def validate(self, attrs):
        access_token = attrs['access_token']
        openid = check_save_user_token(access_token)
        if not openid:
            raise serializers.ValidationError('无效的access_token')
        attrs['openid'] = openid

        mobile=attrs['mobile']
        sms_code=attrs['sms_code']
        redis_conn = get_redis_connection('code')
        real_sms_code = redis_conn.get('sms_%s' % mobile)
        if real_sms_code.decode() !=sms_code:
            raise serializers.ValidationError('短信验证码错误')
        try:
            user = User.objects.get(mobile=mobile)
        except User.DoesNotExist:
            pass
        else:
            password = attrs['password']
            if not user.check_password(password):
                raise serializers.ValidationError('密码错误')
            attrs['user']=user

        return attrs

    def create(self, validated_data):
        user = validated_data.get('user')
        if not user:
            user = User.objects.create(
                username = validated_data['mobile'],
                password = validated_data['password'],
                mobile = validated_data['mobile'],
                )

        OAuthQQUser.objects.create(
            openid = validated_data['openid'],
            user = user
        )

        return user



